Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua thuong » cua truong, cua phuong, cua huong
hoc thieu » toc thieu, hoc hien
ca thuong » cao thuong, va thuong, cp thuong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh tranh ((cua thuong) OR (ca thuong)) thong ((dan toan) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh ((cua thuong) OR (ca thuong)) thong ((dan toan) OR (dan than)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tranh ((cua thuong) OR (ca thuong)) thong ((dan toan) or (dan than)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh ((cua thuong) OR (ca thuong)) thong ((dan toan) or (dan than)) tap*.